Automatically-threading shuttle for looms



m 0 T m W N. W. BRANNON AUTOMATICALLY THREADING SHUTTLE FOR LOOMS FiledOct. 30, 1925 March 9 1926.

I ,JTTORNEY Patented Mar. 9, 1926.

1,576,030 UNITED STATES PATENT OFFI E;-

NEM WILLIAM BRANNON, or snnnasourn CAROLINA, AssIeNoI 'ro DBAPER oon-PORATION, or I-IOPEDALE, MASSACHUSETTS, A CORPORATION or MAINE.

AUTOMATICALLY-THREADING SHUTTLE FOR LOOMS.

Application filed October 30, 1925. Serial No. 65,880.

To all whom it may concern Be it known that I, NEM WILLIAM BRAN- NON, acitizen of the United States, and a resident of Greer, in the county ofGrreenville and State of South Carolina, have invented an Improvement inAutomatically- Threading Shuttles for Looms, of which the followingdescription, in connection with the accompanying drawings, is aspecification, like characters on the drawings representing like parts.

This invention relates to automatically threading shuttles and is moreespecially directed to the tension means for exerting proper tension onthethread during weaving.

It has heretofore been common to provide various means ofshuttle-tensions to insure laying the 'fillingstraightin the shed, andsome of such tension devices have been made adjustable so that thetension on the thread may be varied from time to time in accordance withthe character of the thread in use. In such cases, however,theadjus'tability of the tension device has not been readilyaccomplished and usually some tools or adjusting devices have beennecessary in order to vary the tension exerted by the tension device.

One of the objects of, the present invention is to provide a shuttle ofthe automatically replenishing type with atension device which may bereadily. manipulated by the weaver to vary the tension either more orless without necessitating either removal of the tension device itselfor the employment of any tools for the purpose.

In the illustrated form of the invention the shuttle is shown asprovided with a threading block of the open type, such, for instance, asshown and described in the-Eda on the occurrence of aloop or overthrow,

and while the advantages of the present invent-ion are well manifestedin connection with such character of shuttle and threading block, it isto be understood that applicant may employ the present invention inconnection with other types of automatically threading shuttles.

The tension device of the present invention consists of a tension padwhich as shown invention detached;

has a laterally flaring opening .for the entrance of the thread as itswirls or balloons on the first pick following replenishment andthereafter exerts tension upon the is provided which also has a lateralopening and an arm extending over oneof the jaws of the pad andformed-of a pliable, substantially non-elastic material or metal,

which may be bent in different positions andwhen bent will retain itsbent-form to there by vary the opening, through which the thread passesduring weaving andconsei quently the tension exerted upon the thread.

-The invention and new combination of parts will best be made clear fromthe. following description and the accompanying drawings of one goodform thereof.

In the drawings: I 1 I Fig. 1 is a perspective View of the threading endof a loom shuttle provided withthe present invention;

Fig. I threading end of the shuttle shown in Fig. 1;

Fig. 3 is an enlarged *detached detail showing the tension device of thepresent Fig. 4 is an elevation of the tension device lookingin thedirection longitudinal- 1y of the shuttle and showing the tension padwith the jaw opening contracted for exeirting increased tension upon thethread;

Fig-5 is a view similar to that of Fig. 4 showing the jaw opening of thepad. enlargedto exert less tension upon the thread.

The loom shuttle 1 may be of usual character and formed of wood for theproper'support of the filling earrier2 on which the filling or thread 3is wound, and as iscom mon in filling replenishing shuttles the lowerwall of thev shuttle is cut away to provide an opening 4 for thedischarge of the filling carrier. I

Frontward of the bobbin chamber the shuttle is provided witha threadingblock receiving chamber in whiche is secured the threading block 5having a longitudinally extending thread passagefi, and laterallyof'thread during weaving as the thread draws 2 is a longitudinal sectionofthe the longitudinally extending thread passage thesh'uttleisi'provided with the usual side delivery eye 7.

Frontward shuttle wood is cut away as at'8to .provide a leader 'for thethread that it may pass into control of the threading bloch on vthefirst pick following replenishment.

The threading block *5 is-secured in the shuttle body-by the usualcrossbolt 9 and as showninthe pres'ent instanceythe pin'lO extendsdownwardly from the threading blook and i s received in an openingrinthe shuttle "body; {lhese pa rts may construction and as moreparticulat'ly shown "and described in the Stimpson patent, to whichreference has hereinbefore been jmade. The longitudinally extendi ngthrezulpassagie 6, when'ot the open top character-pas indicated, has athread casting device 11 which 'lnay he formed as afscroll ofsubstantially the same general character as that which is "more fully{shown and '-clescr'ibe'cl in the sump-sen patent, and if desired; thethread ing block 5-may be" f(.irmed of cast ironhav: *ing arust-prooflcovering. a

y The tension device, in accord ance Twith the present invention, ispreferably located in the longitudinally extending Pthread tutlinallyextending thread passage When the shuttle is threadedythe thread'drawsl'beftween the upper j aw '14 and thelow 'er aw '15 of thepad'with theresult 'that if the'upper and lower jaws are brought closertogether and retained m such positlo'n, the 'tenslon 1 fon-the t'lireadWill be greater than if they are further: apart, a condition indicatedin nr s. wand r i r The? tension pad 12 may!bejsuitably shaped inaeco'fiance-with the conditions of use,"hut

as 'he'rein shown it is substantially of block 'g'form anu thelaterallyezttending jaw 141mg its'outer surface be'velljedor inclined as at *16,in order "to more effectively direct the thread into control of thetension de'vice, as the 1 thread "balloons from the -bobbin"on the firstpick following re lenishment.

The padholder may he variously contrived, but one of the essential"features thereof is that it' be formed of a pliable or ductilematerial, such as lead, for instance,

of the threading block 5 the be of usual which may be bent intodifierent positions and *when iso bent retain its 5 bent position.

comprises a base portion 17 which may rest upon or in a groovefforlned'in'the bottom wall 01" the threadingblock "receiving cha1nber,as'indicatedin 2, and such base portion 17 is provided with a downwardlyextending fiuger 18 that projects into a cutaway or rabbeted portion 19formed inthe shuttle wood and preferably ln the "recess which receives"the'holt -lO of the threading block. Thebase portion 17is-fo'tsuificient length to "enablethe pad "holder portion proper oftheholder to be lOCtltBLllJGt-WQGH the threading block. ;-and bobbinchamber an d, as herein shown, the pad holder has upwvardly' projectingportiIOns QO, 21H and 22 wl'iich'engage the lower or base portion ofthepad,-and the upwardly projecting portion 23 preferably formed at theside ofthe :p'ad remote from the: moutlr or opening 13, and suchupwardly projecting portion 23 has an arm 24 which overlies i the upperjaw 1% of th'e pad the construction being such that the arm 24L which isfOl'lllGClO'f pliable "and substantially non-elasticmaterial as deretainits=bentipositionto define the sizeor character of the thread engagingopenlng of'the pad. As-"shownin Fig; h the armfi l has been bent:downwardly, with the result "that theiupperzjaw 1450f the-pad has beenmoved towards the lower jaw 15 an'd the mouth 13 of the: pad 11 beencorresponding 1y contracted to "exert considerable f tension upon thethread d whieln as above stated, passes between the Jaws of the pad.

In Fig." 5 =th'e l opposite condition has been brought "about th at is,the arm or plate 24 rwerlying the upper jaw I4: of the pad has been bentupwardly, as compared "with the position ofg'parts in Fig. 4, with theresult separated and the mouth 13 0f=the opening has beencorrespendingly "enlarged to there-,

by'vary the tension upon the thrlead.

WVhen t-hewweaver rwi hes to 'increase the mtension upon thethread:inu'se, hesimply f presses i downwardly upon the plate or .arm 124: ofthe} pad i holder, and such pressure: may be conveniently exerted by thefinger of the wearer. On the "other hand, should the weaver- 'desire todecrease the tension on the thread, he has only to lift 01' bend the"arm or plate 24 upwardly, as indicated inFig. 5, it= bein' understoodthat the pliable and 1 substantially! nonel astic character orithe armor plate 2% permits such ready bending by the finger of the weaver,land, whenbent, the arm retains the position tto which it'has beenmoved;

- FroIn the *constlruction describedyit will be clearly apparent thatthe pad being Thepad holder as shown inthe drawings formed of resilientmaterial, such, for instance, as rubber or felt, and the pad holder oressential feature thereof, that is, the overlying arm or plate 21-,being torn'ied of substantially non-resilient material which may be bentinto desired shape, and retain the bent term, the weaver can at onceadjust the tension of the pad to suit the condition or character of theyarn in use without delay and without the use of special tools.

What is claimed is:

1. An automatically threading loom shuttle having a threading blockprovided with an open top threadpassage and a side delivery eye, atension pad having a thread receiving opening with a flaring mouth, anda tension pad holder having a part enclosing one of the jaws of theflaring mouth of the tension pad formed of a pliable substantiallyinelastic metal that may be bent into different positions and retain itsbent form to vary the size of the thread receiving opening and thetension exerted upon the thread during weaving.

2. An automatically threading loom shuttle having a threading blockprovided with a longitudinally cxtendingthread passage, a side deliveryeye, a thread tension device having a pad with a mouth flaring laterallyof the thread passage and an arm overlying the upper j aw of the flaringmouth and formed of pliable substantially inelastic material that may bebent up or down and retain its bent position to vary the tension exertedupon the thread during weaving.

3. An automatically threading loom shuttle having a threading block witha longitudinally extending thread passage and side delivery eye, atension device comprising a tension pad having a lateral opening forreceiving the thread, and a pad holder also having a lateral opening,and one arm overlying one jaw of the tension pad opening and secured tothe shuttle body.

4. In an automatically threading shuttle for looms, the combination ofthe shuttle body having a threading block provided therethrough.

with a longitudinally extending thread passage and a side delivery eye,and a tension device comprising a friction pad havin a thread receivingopening and a pad hol er formed of a pliable substantially inelasticmetal which may be bent into difierent pad holding positions and retainits bent form to var the size of the thread-receiving opening in the padand the consequent amount of tension exerted on the thread passing 5. Anautomatically threading loom shuttle having a threading block and a sidede livery eye, a thread tensioning pad having an opening through whichthe thread passes during weaving, and a pad holder formed of pliablesubstantially inelastic material having a bendable portion bearing uponthe pad at one side of the opening for varying the size of said openingand the consequent tension exerted upon the thread.

6. An automatically threading loom shuttle having a threading block anda side delivery eye, a thread tensioning pad having an opening throughwhich the thread passes during weaving and located between the threadingblock and bobbin chamber, and a pad holder formed of pliablesubstantially inelastic material having a bendable portion bearing uponthe pad at one side of the opening for varying the size of said openingand the consequent tension exerted upon the thread.

7 An automatically threading loom shuttle having a threading block andside delivery eye, and a thread tension device comprising a rubber padhaving jaws for receiving the thread, and a pad holder secured to theshuttle body and having apart overlying a jaw of the rubber pad formedof pliable substantially nonelastio metal that may be bent in theshuttle and retain its bent form to vary the tension exerted upon thethread during weaving.

In testimony whereof, I have signed my name to this specification.

NEM WILLIAM BRANNON.

